Road striping machine



sept. 12, 1967 2 Sheets-Sheet 1 Filed July 2l, 1965 Sept. l2, 1967 F. E.MILLER ET AL ROAD STRIPING MACHINE 2 Sheets-Sheet Filed July 2l, 1965DON MON INVENTOR5 FRANK BMILLER WILLIAM R. SHAFFER KAQL, MvT- LOCKSATFORNEY United States Patent O 3,341,127 ROAD STRIPING MACHINE Frank E.Miller and William R. ShaHer, Huntingdon, Pa., assgnors to WaldIndustries, Inc., Huntingdon, Pa., a corporation of Pennsylvania FiledJuly 21, 1965, Ser. No. 473,637 11 Claims. (Cl. 239-100) ABSTRACT F THEDISCLOSURE The present invention relates to highway line sprayingapparatus having an electrical control for various line patterns, andmore particularly includes means for introducing an adjustable incrementinto a mechanically driven electrically controlled intermittent cyclingdevice.

It is the practice to place markings or indicating lines along thecenter of a highway or between the lanes of a multi-lane highway. Inorder to rapidly and economically apply the desired lined pattern, it isnecessary that equipment be provided that is capable of laying down orspraying a number of different line patterns. It is also necessary thatthe equipment be such as to enable the operator to apply a new line onthe highway that will coincide with the existing intermittent line whenrefreshing lines that are still visible, have not been completelyobliterated by traffic and weather conditions.

It is therefore an object of the present invention to provide a highwayline spraying apparatus having an adjustable increment ofspraying time,which increment may be either an increase or decrease of the normalintermittent cycle during which paint is sprayed.

It is also an object of the present invention to enable the increment tobe introduced in multiple during the same cycle.

The present invention as used with highway line spraying apparatus makesit possible for the operator of the vehicle to estimate the dilferencebetween the existing intermittent line and the new line he is applyingand compensate for this difference in measured known increments with ahigh degree of accuracy.

In the apparatus of the present invention, a known adjustable amount ofincrement can be manually or automatically introduced into the memorysystem which carries out the desired change of the intermittent cycle.

Basically the present invention includes a mechanism having a gear trainconnected through a clutch to a measuring road wheel drive whichprovides a normal cycle for applying a paint stripe to the road. When anintermittent cycling unit is operated the gear train is then engaged andthrough a reset means is automatically reset to an initial point eachtime the painting of the intermittent line is completed. Throughadvance-retard switching means the registration of the new line is madeto match the existing old line and coincides with the old ICC linethroughout its entire length by incremental adjustment of the length ofthe new line.

The above and other objects and advantages of the invention will becomeapparent upon full consideration of the following detailed descriptionand accompanying drawings in which:

FIG. 1 is a circuit diagram of the electrical system embodied in thepresent invention with mechanical interconnections thereto;

FIG. la is a diagrammatic illustration of the various line patternsproduced by the present invention and their relation to the circuitcontrolling switches illustrated in FIG. l; and

FIG. 2 illustrates an alternate embodiment of the mechanical portion ofthe system of FIG. 1.

Referring to the drawings and particularly FIG. l, a ground wheel 10 isillustrated therein and it is understood that the ground wheel 10 is tobe rotatably mounted on a vehicle for applying markings to a highway orroad. The ground wheel 10 may be one of the drive wheels for the Vehicleor may be separately mounted thereon. The vehicle on which the groundwheel 10 is rotatably mounted may be of any conventional style now inuse for applying road striping and accordingly may be of theself-propelled or trailer type used for this purpose. The road stripingvehicle normally carries thereon containers for the paint binder andglass reecting spheres, a cornpressor, an internal combustion engine,paint gun and sphere dispensers. The paint guns are diagrammaticallyillustrated in FIG. 1 at 11, 12, 13 and 14 and it is understood thatthey will communicate in the usual fashion with the air compressor andpaint binder container through suitable conduits.

T he line striping apparatus embodied herein is adapted to apply acontinuous or interrupted line and since several paint guns 11-14 areutilized, variations of the interrupted and continuous lineare adaptedto be applied, some of these variations being illustrated in FIG. la.

In order to control the operation of the paint guns 11-14 an electricalcircuit shown in FIG. 1 is employed, the electrical circuit beingadapted to automatically control the paint guns to effect the desiredstriping operation.

Since the striping operation is dependent on the travel of the stripingvehicle, a direct drive is provided from the ground wheel 10 to thepaint gun control means. The circuit drive includes a drive pulley 15that is driven by the ground wheel 10 through a belt 16, the shaft ofthe ground wheel 10 also including a pulley (not shown) that operativelyengages the belt 16. Drive pulley' 15 is mounted on shaft 17 turningsaid shaft and kick cam 18, pulse cam 19 and gear 21 mounted thereon.Kick cam 18 is mounted on shaft 17 so as to lead pulse cam 19 inrotation of both cams. Gear 22 mounted on input shaft 23 to the brakeand clutch assembly 24-25 is a relative large gear driven by gear 21mounted on the opposite end of shaft 17 from drive pulley 15.

A differential 30 has gears 31 and 32 thereon turned respectively bygear 26 on the output shaft of clutch 25, and gear 33 mounted on shaft34 connected to the armature of motor 35. Mounted on shaft 36 which isconnected to differential gear 32 are reset cam 37 and skip cam 38.

Each of kick cam 18, pulse cam 19, reset cam 37 and skip cam 38 havemicro-switch contacts 41-44, respectively operated bythe respectivecams. Follower 41a rides on the edge of kick cam 18. Kick cam 18 has alobe on its periphery just large enough to close the contacts 41a- 41bwhen follower 41a rides on the lobe. Pulse cam 19 iS a split lobe cam inwhich the percentage of lobe on the cam can be varied by spreading theseparate lobes or closing them together to an Overlapping position.Follower 42a rides on the peripheral edge of pulse cam 19 and causes aclosing of contacts 42a and 42b when the follower 42a rides on thelobes. Reset cam 37 having a recess in the periphery thereof hasfollower 43a riding the edge of the cam with contacts 4311-430 closedwhen follower 43a is within the recess and alternatively contacts 43a43bclosed when follower 43a rides the remaining edge of reset cam 37outside of the recess. Mounted on the outer end of shaft 36 for rotationwith reset cam 37 is a skip cam 38 whose lobe thereon determines theskip line cycle and whose setting in relation to reset cam 37 determinesthe beginning of the skip line cycle. Follower 44a responsive to therotation of skip cam 38 causes a closing of contact 44a-44b whenfollower 44a rides on the lobe of skip cam 38. Skip cam 38 may be asplit cam similar in construction to cam 19 and thus could be adjustedas to the portion of the total cycle during which painting takes place,this portion being variable because of the split nature of the cam.

Referring now to the electrical circuit portion of FIG. 1, whichoperates in conjunction with the mechanical portion described above, theelectrical circuit for controlling the operation of paint guns 11-14 isillustrated as including a power source such as a battery 46, that maybe the battery of the vehicle on which the striping equipment ismounted. The battery 46 is connected to ground and also through theignition of the vehicle to an on-off relay 47, and through a fuse 48, toa conductor 49 connecting to a main switch 50 of the three pole singlethrow type.

One set of contacts 51 of the switch 50 connects the conductor 49 toconductor 52 that in turn is connected with the multi-station switchindicated generally as 100 within the control box, the conductor 52forming a part of the power feed for the circuit. The conductor 49 isalso connected through a set of contacts 53 to contact 44b operated byskip cam 38 and to the center contact of take-out memory relay 60.Conductor 52 through contacts 51 connects conductor 49 to ground throughan indicating light 54. The light 54 is conveniently mounted on the samepanel as the multi-station switch 100 and serves to indicate whenvoltage has been applied to the switch 100 and is available to operatethe unit.

A second indicating light 55 is connected in series with contact 43C ofthe micro-switch operated by reset cam 37 and serves to indicate acompleted circuit in the reset system and thus indicates when the skipline unit is in a reset position and ready to operate. A third pair ofcontacts 56 connects follower contact 44a, operated by skip cam 38, to aconductor 57 forming a part of the circuit for supplying skip powerduring the skip cycle, as will be described hereinafter.

The multi-station switch 100 has eight separate operators illustratedand each of these operators controls either one, two or three sets ofcontacts as will be apparent hereinafter. The conductor 52 is connectedwith conductors 91 and 92 of the switch 100. Conductors 93, 94, 95 and96 are respectively connected to the valve operating solenoids of sprayguns 11, 12, 13 and 14 respectively.

For the purposes of illustration the circuitry has been set up tocontrol a left spray gun 11 for spraying a yellow stripe, a right spraygun 13 for also spraying a yellow stripe, and two center spray guns 12and 14 arranged in tandem to spray yellow and White stripesrespectively. The number of spray guns and the colors used are merelyillustrative and are not meant to limit the number of spray guns sinceeither more or less than four spray guns may be used with the presentinvention. Only eight operators have been illustrated in FIG. 1 but bythe addition of more operators with additional contacts with connectionsto the conductors 93-96 leading to the spray gun solenoids and to theconductors 97-98 supplying skip power, each of the spray guns could becontrolled as is spray gun 14 to spray intermittent lines or continuouslines as desired. Also connected to each of conductors 93-96 are relaysolenoids 7174, respectively, which operate their respective relaycontacts to operate counters 75-78 which record the amount of sprayingtime in units of distance sprayed for each of spray guns 11-14. One ofeach of the relay contacts is yconnected to a counter solenoid with theopposite contact supplied with 12 volt pulsed power. Counters 75-78operate one count for each pulse supplied and therefore in the systemillustrated an individual counter will operate a count for each pulsesupplied to the counter during the operation of the spray gun associatedwith that counter. An additional pulse cam 20 driven by road wheel 10operates contacts with one contact connected to a 12-volt source throughmain switch 50 and the other contact connected to relay contacts ofsolenoids 71-74, thereby supplying the pulse power to each one of therelay contacts as shown. This enables the counters to measure in feet,yards, or portions of a mile regardless of road speed with minimal errorsince there is a correlation with road speed of one pulse per unit ofdistance. In the circuit for controlling the operation of the spray guns11-14 conductors 93-96 in multi-station switch 100 are connected by theseparate operators either to conductors 91 or 92 when a solid line orlines are to be applied such as illustrated by patterns 1, 2 and 6 or toconductors 97 or 98 supplying skip power when only a skip line is to beapplied such as illustrated by pattern 5. Other operators connect onespray gun to a conductor 91 or 92 and another spray gun to a conductor97 or 98, thereby having a solid line sprayed by one spray gun while anintermittent line is sprayed by the other, such as illustrated inpatterns 3 and 4. In each case upon the operation of a separate operatora connection is made from the 12-volt line of conductor 92 to eitherconductor 101 or 102 dependent upon whether or not an intermittent lineor solid line is to be sprayed. If an intermittent line is to be sprayedthen connection is made to conductor 101.

Referring to the multi-station power switch 100, switches 120, 121 and122 are connected for movement together and are moved by a commonoperator or key. It is seen that closing of the switch 120 will connectconductor 93 with conductor 91, and that closing of switch 121 willconnect conductor 94 with 91, and closing of switch 122 will connectconductor 102 with 92. In a similar manner each key or operator operatesone of the following groups of switches namely, 123-125, 127-129,131-133, 13S-136, or 137-138. Switch 139 in the multistation switch isutilized when it is desired to merely reset the circuit. The circuitillustrated in FIG. 1 also provides for retarding or advancing the linepattern during the intermittent or skip line applying operation. Inconjunction with this operation the circuit also provides forincremental increases or decreases in the length of the intermittentline. For these purposes there is included in the circuit advance-retardswitch 62 for advancing or retarding the intermittent line in thedirection of the vehicle. Also a take-out memory relay 60 and initialmemory relay 61 are each multi-position relays with rotating centercontacts 64 and 65, respectively. Solenoids 66 and 67 of relays 60 and61, respectively, rotate the respective center contacts of each relayfrom position to position one increment at a time. These relays areconnected in a parallel manner so that their multiple positions arewired where each is in phase with its comparable unit. Also the rotatingcenter contacts 64 and 65 operate in phase. Solenoid 67 is connected tocontacts 68 and 69 of advanceretard switch 62. Thus solenoid 67 ofinitial memory relay 61 is pulsed through operator controlledadvanceretard switch 62. Solenoid coil 66 of take-out memory relay 60 ispulsed by the kick cam micro-switch through contacts 41a-41b and thecontacts of advance-retard operation relay 80 and contacts 81 of motoroperational relay 82 as the unit either advances or retards. Due tothese connections both relays 60 and 61 are in phase atall times, exceptwhen the memory circuit is in use. Through this circuitry the memorysystem can count in and take out pulses as they are applied to thecorrected cycle. EX- amining the circuitry in further detail, it will benoted that the initial memory relay coil 67 is pulsed one time for eachoperation of the advance-retard switch 62. Voltage ows through thecenter contact 64 of the take-out memory relay 60 and to the initialmemory relay 61, then out through the center contact 65 of the initialmemory relay 61 and to the coil of advance-retard operation relay 80.This voltage may flow at any time that the rotating center contacts64-65 of relays 60-61, respectively, are aligned. This is the normalcondition when the unit is not advancing or retarding. The take-outmemory relay 60 is operated by the same voltage supplied to the coil ofmotor operational relay 82. For each pulse which is put in by theadvance-retard switch 62 the system operates one increment and t-hetake-out memory relay 60 moves back one increment towards alignment.

The operation of reset relay 83 will be discussed further in connectionwith the operation of the system but this relay has as its sole purposeto return the unit to a zero position when not in use. In doing this itdisconnects the advance-retard system from the skip line circuitry.

Motor direction control relay 84 in the circuit is connected so as toreverse the ground and apply voltage to the motor leads as necessary todetermine the direction of rotation of motor 35.

Uperation The power for the circuit is supplied by actuating main switch50 which closes contacts 51, 53 and 56. Assuming that solid orcontinuous lines are to be applied by spray guns 11 and 12, as indicatedIby pattern No. 1 in FIG. 1a, the operator depresses t-he button forswitches 120, 121 and 122. Power from battery 46 is then supplied to thesolenoids of spray guns 11 and 12 through conductor 49, switch contacts51,v conductors 52, conductor 97, switches 120 and 121 to conductors 93and 94 respectively. Power is also supplied from conductor 52 throughswitch 122, con-ductor 102, through reset relay 83 to a reset speedrheostat but there is no action since the gear train is engaged onlywhen intermittent or skip painting takes place.

If an intermittent or skip line is to be applied, for eX- ample as lbyspray gun 14 illustrated by pattern No. 5 in FIG. la, switches 135' and136 are closed. Power to the solenoid of spray gun 14 is suppliedthrough conductor 49, main switch contacts 53, micro-switch contacts44h-44a on skip cam 38, main switch contacts 56, conductors 57,conductor 97, switch 135 and conductor 96. In order to drive the cam 38to cause the microswitch 44 to intermittently break the circuit to thesolenoid of spray ygun 14 and thus apply the skip line, the clutch 25must be energized. Power to clutch 25 is supplied through conductor 49,main switch contacts 51, conductor 52, to conductor 92, through switch136, conductor 101, to clutch 25. The clutch 25 is thus energized tocause gear 26, differential 30, shaft 36 and cam 38 to be rotated,thereby interrupting the circuit through switch contacts 44a-44b asdetermined 'by the contour of the cam 38 with the operation ofmicro-switch 44 controlled by the rotation of the cam 38.

When an intermittent line is being applied it is desirable at times toadd incremental advancing or retarding changes into the circuit. In suchcase shaft 17 is driven by ground wheel through belt 16 and drive pulley15, thereby correlating the paint spraying with the road speed of thevehicle. This input is connected to reset cam 37 and skip cam 38 throughclutch 25 and brake 24 and diierential 30. Skip cam 38 rotates onerevolution per cycle as may be desired by the operating crew. The lobeof skip cam 38 operates a micro-switch 44 with contacts 44a and 44bwhich close while follower 44a rides on the lobe of skip cam 38 andwhich allows the operation of the respective spray -gun or guns upon theclosing of contacts 44a-44b. The portion of the cycle during which thespray guns are operated may be varied to conform to irregularities inprior paint application which are presently on the road and which t-heoperator is trying to retrace. In such case motor 35 is engaged throughdiierential gear 32 to the shaft 36 to rotate it ahead in its normaldirection of rotation or alternatively in reverse while clutch- 25 isdisengaged `and brake 24 holds gear 31 of differential motionlessthrough gear 26, thus lengthening or shortening the total cycle comparedto the actual travel on the road.

Differential 30 which is attached on shaft 36 controlling the movementof skip cam 38 and reset cam 37 is connected to the motor 3S through itsgear 32 and motor gear 33. This motor 35 is multi-directional and willdrive the shaft 36 in either direction regardless of the input directionfrom road wheel 10 or other measuring device. This motor 35 adds theadvance or retard increment as desired. The only difference between anadvance or retard increment is the direction of motor 35 operation. Eachside of motor 35 is grounded to a variable resistor so that the speed inone direction may be dilferent from the speed in the other direction.This is necessary for any minor adjustments due to the peculiarities ofoperation of each individual unit.

When tracing an increment of change, either advance or retard, throughthe system, the following actions occur. When the advance-retard switch62 is operated in either direction a pulse is sent to initial memoryrelay 61 through solenoid coil 67. This throws rotating center Contact65 one step out of phase with rotating center contact 64 of take-outmemory relay 60 and deenergizes the coil of advance-retard operationrelay 80. The function of this relay is to permit voltage to appear inthe advance-retard circuit particularly at micro-switch 41. At contacts41u- 41b operated by kick cam 18, the voltage at these contacts, whenfollower 41a passes over the lobe of kick cam 18, passes through thesolenoid coil of motor operation relay 82. When this relay is operatedvoltage is permitted to the contacts 42a-42b operated by pulse cam 19and to the rest of the circuit which drives the motor 35. At the sameinstant that the advance-retard switch 62 is operated and a pulse issent to the initial memory relay 61, a pulse is also sent to one of thetwo coils A or B of motor direction control relay 84 connecting one setof contacts through operation of coil A and a second set of contactsthrough operation of coil B depending through which coil the voltage isfed. Relay'84 simply governs the direction of rotation of theadvance-retard motor 35 by connecting voltage to one side ofthe motorand ground to the opposite side of the motor. When the direction ofmotor rotation is desired to be changed the motor direction controlrelay 84 is thrown in the opposite direction by application of voltageto the opposing coil and the ground and control voltage are applied tothe opposite terminals of the motor.

Pulse cam 19 holds the circuit in operation for a specied length of timeuntil motor 35 has completed the change in degrees of rotation of skipcam 38. This pulse is adjustable in length due to the split lobe camconstruction of pulse cam 19 by which the amount of lobe can be variedby spreading the separate lobes or closing them together. This variationin lobe spread regulates the time the motor 35 is running and thereforethe increment length. The pulse cam 19 is correlated with the kick cam18 in such a manner that as soon as kick cam 18 has operated the motoroperation relay 82, the pulse cam 19 through microswitch contacts42a-42b picks up the motor operation relay 82 coil circuit and holds itin operation for a given length of time. Pulse cam 19 cannot start inthe middle of the lobe because kick cam 18 must be operated lirst. Thiswould mean that the shaft must rotate a portion of the cycle if theinitial increment is pulsed into it While the follower 42a which rideson pulse carn 19 is at a point after the initial point of the lobe onpulse cam 19.

After the follower 42a passes over the lobe of pulse cam 19, contacts42a-42b are opened which drops the motor operation relay 82 out of thecircuit, opening all contacts therein.

When the micro-switch contacts 41a and 41b were closed by kick cam 18initially, thereby operating motor operation relay 82, the take-outmemory relay 60 was Ialso pulsed through motor operation relay 82causing it to move back into phase with initial memory relay 61 andenergizing the coil of the relay 80 which caused the circuit voltage toopen, cutting voltage off the advanceretard circuit. When the initialmemory relay 61 is pulsed several times, take-out memory relay 60 willreceive a pulse every time the motor operation relay 82 operates untilit has returned in phase with initial memory relay 61.

The initial memory relay 61 may be automatically pulsed instead ofdepending upon manual operation of the advance-retard switch withincrements added by placement of a puiser, similar to a telephone dial,in series with advance-retard switch 62 and solenoid coil 67. Anymultiple of an increment may then be pulsed into the systemautomatically in lieu of manual means. This would entail no change inthe operation of the system as described above.

The measured increment device described above will work equally well invariations of the systems for putting down intermittent paint lines onthe road. For example, a double clutch system could be substituted forthe brake 24, clutch 25, and motor 35 of the present system. In such analternate system illustrated in part in FIG. 2, a clutch 201 replacesboth clutch and brake 24 while a second clutch 202 replaces the electricmotor 35. Differential is eliminated and the second clutch 202 isconnected to gear 203 which turns shaft 36 with reset cam 37 and skipcam 38 mounted thereon through gear 204 on the output of second clutch202. First clutch 201 has a gear 205 mounted on its output so as to alsobe able to rotate gear 203. Gears 206 and 207 are mounted on the inputsto clutches 201 and 202 respectively and are both in rotating contactwith gear 21 which, as previously described in regard to FIG. l, isrotated through connection to ground wheel 10.

Gear 206 is larger than gear 207 and therefore since both are rotated bythe same gear 21, the output gear 204 of second clutch 202 rotates at agreater speed than output gear 205 of first clutch 201. Therefore, whenit is desired to increase the speed of shaft 36 carrying cams 38 and 37thereon, as was previously done by motor 35, in cooperation with brake24 and clutch 25, the first clutch 201 is disengaged and second clutch202 having the greater output speed of rotation is engaged. When it isdesired to slow down shaft 36, both clutches 201 and 202 are disengagedfor a moment and then first clutch 201, which is the normal driveclutch, is engaged and shaft 36 is rotated at a normal speed.

The electrical system connected to the double clutch system illustratedin FIG. 2 is substantially similar to that illustrated in FIG. 1 withminor changes. The connections to clutch 25 are made to clutch 201 so asto allow the engagement of clutch 201 for normal skip pattern painting.The connections to the brake 24 are eliminated. The retard voltageconnections made to motor in FIG. l are instead connected to clutch 202in FIG. 2 so that skip cam 38 turns faster when retarding. Theconnection 208 between relay contacts of motor direction control relay84 is opened removing the ground from the advance contacts of relay 84so that the circuit through clutch 202 is not complete, and thereforeclutch 202 does not engage. The advance-retard speed rheostat is alsodeleted for the circuit of FIG. 2. When the advance section ofadvanceretard switch 62 is operated it will also activate a coil 210 byclosing of a switch 211 supplying voltage from the same source ofcurrent supplying the coil of relay 80. A connection is made at point Xin the circuit for this current-source. Contact 212 operated by coil 201is in the line to clutch 201. The -circuit of FIG. 1 with the changesdiscussed above thereby completes the circuitry of FIG. 2 and operatesthe double clutch system. Conductors 1' through 7 in FIG. 2 extendingfrom reset relay 83, are connected as conductors 1 through 7 shown inFIG. 1 with equivalent circuit connections.

It will be obvious to those skilled in the art that various changes maybe made without departing from the scope of the invention and thereforethe invention is not limited to what is shown in the drawings anddescribed in the specification but only as indicated in the appendedclaims.

What is claimed is:

1. Road striping apparatus comprising a plurality of spray guns,

solenoid means for controlling the operation of said spray guns,

an electrical circuit electrically connected to said solenoid means forcontrolling the operation thereof,

said electrical circuit including a power supply,

a multi-station switch connected to said power Supply,

a skip circuit including a skip switch responsive to movement of roadstriping apparatus and operable to cause said spray guns to spray aninterrupted line through a predetermined skip cycle,

a reset circuit including a reset switch for automatically resetting theskip cycle,

said multi-station switch including a plurality of sets of contacts thatare electrically connected to said spray guns and said skip and resetcircuits,

each set of contacts defining a predetermined striping pattern andcontrolling the operation of said electrical means to control theapplication of said pattern by said spray guns,

means for advancing and retarding said interrupted line sprayed by saidspray guns, and means for incremental adjustment of the length of saidinterrupted line sprayed by said spray guns.

2. Road striping machinery comprising a ground wheel rotatably mountedon said machine,

a plurality of spray guns mounted on said machine,

an electrical circuit responsive to movement of said ground wheel forcontrolling the operation of said spray guns,

a rst cam means operatively connected to turn proportionately to therotation of said ground wheel,

electromagnetic clutch means electrically connected to said electricalcircuit and adapted to be operatively connected to said ground wheel,

a differential having one side operatively connected to saidelectromagnetic clutch means,

a bi-directional motor operatively connected to the opposite side ofsaid differential,

a second cam means connected to said opposite side of said differentialand responsive to the rotation thereof,

said electrical circuit including a power supply,

a multi-station switch connected to said power Supply,

a skip circuit, reset circuit, kick circuit and pulse circuit,

said skip circuit including a switch responsive to movement ofsaidsecond cam means for intermittently controlling the operation ofsaid guns, said reset circuit responsive to movement of said second cammeans for automatically resetting the cycle of said skip circuit, saidkick circuit responsive to movement of said first cam means forinitiating incremental changes in the cycle of said skip circuit, saidpulse circuit responsive to movement of said first cam means foroperation of said bi-directional motor, said multi-station switchincluding a plurality of sets of contacts that are electricallyconnected to said spray guns and said skip and reset circuitscontrolling the operation of said electrical means to control theapplication of a striping pattern by said spray guns. 3. The roadstriping machine of claim 2, further characterized by a pair ofmulti-position stepping relays with their multiple positions in phasewith each other, one of said relays stepped by operator control of saidroad striping machine, 4 the other of said relays stepped by said kickcircuit. 4. The road striping machine of claim 2, further characterizedby lsaid first cam means including a kick cam and a pulse camcontrolling said kick circuit and said pulse circuit respectively, alobe portion on each of said kick and said pulse cams, said lobe portionon said pulse cam correlated with said lobe portion on said kick cam toactivate said pulse circuit immediately following activation of saidkick circuit. 5. The road striping machinery of claim 4, furthercharacterized by said pulse cam being split lobe cam in which the amountof lobe portion can be varied. 6. A road striping machine comprising atleast one spray gun having a valve operating solenoid, means responsiveto movement of said stri-ping machine for controlling the operation ofsaid at least one spray gun, said controlling means including drivingmeans, electrically controlled clutch means operatively coupled to saiddriving means,

said clutch means including a clutch and a brake,

a first cam means operatively coupled to said driving means,differential means having one portion coupled to said clutch means, =abi-directional motor coupled to a second portion of said differentialmeans, a second cam -means operatively coupled to said second portion ofsaid differential means, circuit means operatively connected to saidclutch means and said motor, switch means in said circuit means andoperatively connected to said first and second cam means. 7. A roadstriping machine comprising at least one spray gun having a valveoperating solenoid, means responsive to movement of said stripingmachine for controlling the operation of` said at least one spray gun,said controlling means including driving means, electrically controlled`clutch means operatively coupled to said driving means, a first cammeans operatively coupled to said driving means, differential meanshaving one portion coupled to said clutch means, .a bi-directional motorcoupled to a second portion of said differential means,

Y a second cam means operatively coupled to said second portion of saiddifferential means, circuit means operatively connected -to said clutchmeans and said motor,

said circuit means including =a pair of multi-position stepping relayswith their multiple positions in phase with each other,

switch means in said circuit means and operatively connected to saidfirst and second cam means. 8. The road striping machine of claim 7,further characterized by said circuit means further including motoroperation relay means and motor direction control relay meansoperatively connected to -said bi-directional motor for turning saidmotor on and controlling the direction of rotation of said motor.

9. The road striping machine of claim 7, further characterized by saidfirst cam means including iat least two cams each having lobe portionsthereon,

rat least one of said cams having means to adjust the lobe portionthereon,

another of said cams leading said at least one of said cams n rotationof said lobe portion thereon.

10. A road striping machine comprising at least one spr-ay gun having avalve operating solenoid,

means responsive to movement of said strip machine for controlling theoperation of said at least one spray sun,

said controlling means including driving means,

first electrically controlled clutch means operatively coupled to saiddriving means,

second electrically controlled clutch means operatively coupled to saiddriving means by a difierent gear ratio than the coupling between saidfirst clutch means-and said driving means,

a first and second cam means operatively coupled to said driving meansand to the input of said first land second clutch means,

a third ,and a fourth cam means operatively coupled to the outputs ofsaid first and second clutch means.

11. Road striping machinery comprising a ground wheel rotatably mountedon said machine,

a plurality of spray .guns mounted on said machine,

Ian electrical circuit responsive to movement of said ground wheel forcontrolling the operation of said spray guns,

a first cam means operatively connected to turn proportionately to therotation of said ground wheel,

first 4and second electromagnetic clutch means electric-ally connectedto said electrical circuit and adapted to be operatively connected tosaid ground wheel,

said second electromagnetic clutch geared to operate from said groundwheel at a higher speed than said first electromagnetic clutch is gearedto operate from said ground wheel,

a gear means connected in common to outputs of both said first andsecond electromagnetic clutch means,

a second cam means connected to said gear means for rotation therewith,

said electrical circuit including a power supply,

a multi-station switch connected to said power Supply,

a skip circuit, reset circuit, kick circuit and pulse circuit,

said skip circuit including a switch responsive to movement of saidsecond cam means for intermittently controlling the 4operation of saidguns,

said reset circuit responsive to movement of said second cam means forautomatically resetting the cycle of said skip circuit,

said kick circuit responsive to movement of said first cam means forinitiating incremental changes in the cycle of said skip circuit,

said multi-station switch including a plurality of sets of contacts thatare electrically connected to said spray guns and said skip and resetcircuits controlling the operation of said electrical means to controlthe application of a striping pattern by said spray guns.

References Cited UNITED STATES PATENTS 2,065,998 12/1936 Emmons 239-1005 2,959,356 11/1960 Shaffer 239-150 X 2,988,285 6/1961 Shaffer 239--150X FOREIGN PATENTS 1,311,909 11/1962 France.

10 M. HENSON WOOD, IR., Primary Examiner.

VAN C. WILKS, Assistant Examiner.

1. ROAD STRIPING APPARATUS COMPRISING A PLURALITY OF SPRAY GUNS,SOLENOID MEANS FOR CONTROLLING THE OPERATION OF SAID SPRAY GUNS, ANELECTRICAL CIRCUIT ELECTRICALLY CONNECTED TO SAID SOLENOID MEANS FORCONTROLLING THE OPERATION THEREOF, SAID ELECTRICAL CIRCUIT INCLUDING APOWER SUPPLY, A MULTI-STATION SWITCH CONNECTED TO SAID POWER SUPPLY, ASKIP CIRCUIT INCLUDING A SKIP SWITCH RESPONSIVE TO MOVEMENT OF ROADSTRIPPING APPARATUS AND OPERABLE TO CAUSE SAID SPRAY GUNS TO SPRAY ANINTERRUPTED LINE THROUGH A PREDETERMINED SKIP CYCLE, A RESET CIRCUITINCLUDING A RESET SWITCH FOR AUTOMATICALLY RESETTING THE SKIP CYCLE,SAID MULTI-STATION SWITCH INCLUDING A PLURALITY OF SETS OF CONTACT THATARE ELECTRICALLLY CONNECTED TO SAID SPRAY GUNS AND SAID SKIP AND RESETCIRCUITS, EACH SET OF CONTACTS DEFINING A PREDETERMINED STRIPING PATTERNAND CONTROLLING THE OPERATION OF SAID ELECTRICAL MEANS TO CONTROL THEAPPLICATION OF SAID PATTERN BY SAID SPRAY GUNS, MEANS FOR ADVANCING ANDRETARDING SAID INTERRUPTED LINE SPRAYED BY SAID SPRAY GUNS, AND MEANSFOR INCREMENTAL ADJUSTMENT OF THE LENGTH OF SAID INTERRUPTED LINESPRAYED BY SAID SPRAY GUNS.
 10. A ROAD STRIPING MACHINE COMPRISING ATLEAST ONE SPRAY GUN HAVING A VALVE OPERATING SOLENOID, MEANS RESPONSIVETO MOVEMENT OF SAID STRIP MACHINE FOR CONTROLLING THE OPERATION OF SAIDAT LEAST ONE SPRAY GUN, SAID CONTROLLING MEANS INCLUDING DRIVING MEANS,FIRST ELECTRICALLY CONTROLLED CLUTCH MEANS OPERATIVELY COUPLED TO SAIDDRIVING MEANS, SECOND ELECTRICALLY CONTROLLED CLUTCH MEANS OPERATIVELYCOUPLED TO SAID DRIVING MEANS BY A DIFFERENT GEAR RATIO THAN THECOUPLING BETWEEN SAID FIRST CLUTCH MEANS AND SAID DRIVING MEANS, A FIRSTAND SECOND CAM MEANS OPERATIVELY COUPLED TO SAID DRIVING MEANS AND TOTHE INPUT OF SAID FIRST AND SECOND CLUTCH MEANS, A THIRD AND A FOURTHCAM MEANS OPERATIVELY COUPLED TO THE OUTPUTS OF SAID FIRST AND SECONDCLUTCH MEANS.